more tweaks to font-size-adjust

Author: John Daggett

css3-fonts/Fonts.html

@@ -153,15 +153,17 @@ <h2 class="no-num no-toc" id=longstatus>Editor's Draft 12 June 2008</h2>
 
     <li>clean up font-weight wording, better definition of bolder/lighter
 
-    <li>specifics of SVG font reference handling
+    <li>same for wider/narrower
 
-    <li>why does cvs mangle Tantek's name?
+    <li>specifics of SVG font reference handling
 
     <li>finish examples for unicode-range
 
-    <li>font-size, font-size-adjust descriptions
+    <li>italic/oblique substitution issue
+
+    <li>font-size
 
-    <li>font-variant
+    <li>move font-variant into font rendering section
 
     <li>font shorthand
 
@@ -1356,21 +1358,21 @@ <h3 id=relative><span class=secno>3.7 </span>Relative sizing: the &lsquo;<a
      <td>as specified
   </table>
 
-  <p>For any given font size, the apparent size and legibility often varies
-   due to stylistic differences. For scripts such as Latin or Cyrillic that
-   distinguish between upper and lowercase letters, at small sizes one factor
-   that strongly determines legibility is the relative height of lowercase
-   letters compared to their uppercase counterparts. This is commonly
-   referred to as the <a class=index-def href="#aspect0" id=aspect
-   title="aspect value"><dfn id=aspect0>aspect value</dfn></a>. Precisely
-   defined, it is equal to the x-height of a font divided by the font size.
-
-  <p>In cases where font fallback occurs, fallback fonts may not share the
-   same aspect ratio as the desired font family and will thus appear less
-   readable. The font-size-adjust property is used to attempt to preserve the
+  <p>For any given font size, the apparent size and legibility of text varies
+   across fonts. For scripts such as Latin or Cyrillic that distinguish
+   between upper and lowercase letters, the relative height of lowercase
+   letters compared to their uppercase counterparts is a determining factor
+   of legibility. This is commonly referred to as the <a class=index-def
+   href="#aspect0" id=aspect title="aspect value"><dfn id=aspect0>aspect
+   value</dfn></a>. Precisely defined, it is equal to the x-height of a font
+   divided by the font size.
+
+  <p>In situations where font fallback occurs, fallback fonts may not share
+   the same aspect ratio as the desired font family and will thus appear less
+   readable. The font-size-adjust property is a way to preserve the
    readability of text when font fallback occurs. It does this by adjusting
-   the font-size so that the x-height of the fallback font matches the
-   x-height of the intended font.
+   the font-size so that the x-height is the same irregardless of the font
+   used.
 
   <div class=example>
    <p>The style defined below defines Verdana as the desired font family, but
@@ -1430,11 +1432,11 @@ <h3 id=relative><span class=secno>3.7 </span>Relative sizing: the &lsquo;<a
 
     <p>This value applies to any font that is selected but in typical usage
      it should be based on the aspect value of the first font in the
-     font-family list. If this is specified accurately, the (a/a') term in
-     the formula above is effectively 1 for the first font and no adjustment
-     occurs. If the value is specified inaccurately, text rendered using the
-     first font in the family list will display differently in older user
-     agents that don't support font-size-adjust.</p>
+     font-family list. If this is specified accurately, the <tt>(a/a')</tt>
+     term in the formula above is effectively 1 for the first font and no
+     adjustment occurs. If the value is specified inaccurately, text rendered
+     using the first font in the family list will display differently in
+     older user agents that don't support font-size-adjust.</p>
   </dl>
 
   <p>Authors can calculate the aspect value for a given font by comparing
@@ -1473,6 +1475,9 @@ <h3 id=relative><span class=secno>3.7 </span>Relative sizing: the &lsquo;<a
     aspect value of this font is something less than 0.5. Adjust the value
     until the boxes align.</p>
   </div>
+
+  <p class=issue>Hmm, so what should happen for scripts with no
+   upper/lowercase distinction (e.g. CJK, Arabic, Hebrew)?</p>
   <!-- prop: font -->
 
   <h3 id=shorthand><span class=secno>3.8 </span>Shorthand font property: the
@@ -1647,8 +1652,6 @@ <h3 id=shorthand><span class=secno>3.8 </span>Shorthand font property: the
     shorthand property.</p>
   </div>
 
-  <p class=issue>These are only supported by IE. Eliminate?
-
   <p>The following values refer to <a name=x27><span class=index-def
    id=system title="system fonts">system fonts</span></a>: